Dispensing device for calking material and the like



June 20, 1950 w. A. SHERBONDY DISPENSING DEVICE FOR CALKING MATERIAL ANDTHE LIKE Filed Aug. 1, 1946 Wbmm CZ. m;

INVENTOR Fatented June 20, 1956 UNITED DISPENSING DEVICE For: oALkiNGMATERIAL AND THE LIKE William A. Sherbondy, Shaker'Heightsfol'iioApplication August 1,1946; Serial1Nor687,735:1 m 5.:1:

This invention relates to a dispensing device for caulking material andthe like comprising a cartridge adapted to contain such material andprovided with a funnel and formed for ready mounting in a caulking gunto enable the discharge of the contents directly from the cartridgewithout smearing the interior of. the gun or clogging the discharge.

The present invention is an improvement on .the cartridge and guncombination of Patent No. 2,106,577, issued January 25, 1938, to WilliamE.

Sherbondy. The apparatus of that patent had a cartridge with acomparatively small spout adapted to coact with a gasket within acomparatively restricted discharge passageway in closure member of thegun. Difiiculties have been" encountered however with the clogging bythe viscous caulking compound in the narrow discharge passageways of thespout and gun, as such compound is frequently of such a nature thatthegun cap, effectively preventing any leakage back into the gun anddoing away with the necessity of a gasket.

The above and other objects of the invention .and'the means by whichthey are accomplished 1 Claim. (01; 2225183 are thoroughly explained inthe following dedispensing apparatus of a type known as a caulking guncontaining my improved cartridge with its discharging funnel, the gunbarrel, cartridge and funnel being shown in section; Fig. 2 is an endview of the funnel of the cartridge; Fig. 3 is a diametric section ofthe funnel; Fig. 4 is a diametric section of the end closure with thecartridge at the discharge end; Fig. 5 is a face view of such endclosure, and Fig. 6 is a side elevation on a reduced scale and partlybroken away of my cartridge as delivered loaded.

In Fig. 1, I0 indicates the body of the cartridge which is a cylindricaltube preferably of paper or similar material. This tube may be woundspirally after the manner of a mailing tube or otherwise made asdesired. When loaded is closed 3 connection at that end.

H The internal 2 at each end. The. cicsure' for one; end (which is theright handend in Fig. 1 is. shown as comprising an internal flangedcapg. I2 which is adapted to be pushed into the cartridge barrel and actas a piston in expellingit and is shown in original position in .Fig; 6and in an intermediate location in Fig. 1.

In addition to this internal cap [2, which may be of paper I place aboutthe, exterior in the right hand endof. the cartridge a flanged metalcap; 29, Fig. 6. The cylindrical wall of the cartri dge barrel becomescompressed between. the

fiangeof the internal cap and theflange of the external leap 29 and thusmaintains a tight Atthe left handend of the cartridge shown .in Fig; 1,which is thedischarge end, I place an internal .cap 20, preferably ofmetal within the me ber i cap at-the discharge endis formed with adishedcentral portion 2| having a discharge opening 22, then an annularportion v23, a ,|cylindrical portion and finally, an out-,wardradialflange 25. When put in place in the cartridge barrel, asshown in Fig. 4, the cylin- -,drical, wall ;24' of-the cap snuglyengages the in;

terior of the cartridge wall and the flange 25 of the cap abuts the endof the cartridge wall, and insures the internal cap being in place. 1The discharge funnel is preferably of sheet metal, has the conicalportion open at its end 32 in'the form of a'comparatively small centraldis,- change aperture, while the other end of the conical portion has aninternal diameter, only slightly. less than that of the cartridgebarrel. At this larger-'endis an outward radial flange '33 and from theouter edge of this flange extends a substantially cylindrical skirt 3|.This. skirt is incompletely annular being separated a short distance atone point, as indicated at 35, in Fig. 3. The interior diameter of theskirt 3| is normally slightly less than the external diameter of thecartridge wall or the leap flange 25, and the extreme edge of the skirtis chamfered outwardly,

indicated at 36 in Fig. 3.

Hence when the skirt of the funnel is forced into place over theexterior of the wall it is sprung slightly outward and by reactioneffectively clamps the cartridge wall between said skirt and thecylindrical portion 24 of the internal cap. This insures a tight closureat this end.

The discharge opening 22 in the cap 20 is closed when the cartridge isnot to be used by a small frangible covering, as a piece of paperindicated in broken lines at 28, Fig. 5, and thus the cartridge is incondition for ready transportation or storage with its contentseffectively contained within it. When this paper is broken away by theinsertion of any suitable instrument through the opening 32 of thefunnel the loaded cartridge is in condition for installation and use inthe gun.

In Fig. l, I have illustrated a conventional caulking gun having acylindrical barrel 40, a conical cup 4| secured on the discharge endthereof, and handle and operatingmechanism secured on the other end. Theconical closure 4| of the gun is shown with a short cylindricalextension 42 externally threaded for the applica- "tionof any suitabledischarge conduit, if desired.

The handle mechanism, as shown; comprises a ":hollow hand grip 43 whichmay be sw'iveled to a cap 44 screwed onto the gun barrel. The hand gripcarries a, lever 45, pivoted at 46, which may operate suitable mechanismnot shown, within the hand grip to engage andfeed forwardly a rod '41,the forward end of. which carries a disc 48 adapted to abut against theinner cap I2 of the cartridge. Accordingly, when the cartridge is in thegun successive manipulations of the lever *may periodically shove thecap l2 along in the barrel of the cartridgeand thus-expel the con-'tents as desired through the discharge funnel.

As shown in Fig. 1, thegun barrel 'is provided with a suitable internalshoulder "49- Whichthe head end of the cartridge may engage. Thecar-*tridge has suchlength-with reference to the-gun in which it is to beused 'that 'when it"is put in the gun with its headend engagingthe-abutment 49,the conical wall ofthe'discharge funnel makes a tightconnection with theconicalwall'll -of the gun closure slightly back fromthe-discharge "end of the funnel, as s'hown'lin Fig. l. 'A'ccordingly,as the compound is'expelledby the advancing cap plunger' li through the'op'ening 22 and the funnel 383, it all passesto-the exterior of the:gu'n-without danger of working back into the gun.

'lt will'be'seen that I have provided a cartridge -'effectively closedat each end'a'dapted for con- -'taining heavy viscous material such astalking compound, etc; that suchcartridge is ready for installationinthe gunm'erely by removing and discarding the external cap *29 at oneend and puncturing the seal'28 at the other; th'enafter the conicalclosure of the gun barrel is removed the cartridge isready'foriinsertion.andiwhenithe gun barrel closure is returned topositionnthe cartridge is firmly clamped longitudinally and is =sults in.a tightconnection or these two metal parts, as the cartridgeis held byits rear end firmly abutting the gun shoulder 49.

By having the conical cap 4| of the gun threaded onthe gun barrel, asshown in Fig. l,

a considerable latitude is allowed in the position of a cap andaccordingly even though there may be some variation in the length of thecartridge the-closure-member 4| may be turned on until the annularshoulder, where the conical portion of the-cap merges into thecylindrical extension, is forced firmly against the conical surface ofthe funnel.

Accordingly, a, verytight connection maybe made between thegun cap 4!and the funnel, though both of these parts may be of metal. This avoidsthe necessity of using any gasket, which experience has shown is liableto deteriorationor destruction in'use.

I claim:

In a dispensing device for calking material and the like havingmechanism for forcing calking material-from a cartridge, 3, barreladapted to receive a tubular-cartridge of calking "material and having aconical shapeddischarge formation projecting from one 'endthereof,anda'cartridge adapted to be'received in said 'barrel,-.said cartridgehavinga funnel formation projecting from one end thereof andhavingai'discharge opening, said funnel formation being disposed coaxialwith said conical formation andadapted -to engage-the latter when 'thecartridge'is in said barrel, the angle between opposite outer sidesofsaid funnel formation being appreciablyilessthan 1 the angle betweenopposite" inside surfaces of said conical formation whereby theouter=surfaces1of the funnel'formationengage the inner surfaces of saidconical formationwithin -a*relatively narrowann'ular area of saidconical formation.

WILLIAM A."SHERBONDY.

REFERENCES CITED g The following references are lof record in the file:of this patent:

UNITED STATES PATENTS Number Name 'Date 1,742,157 Christian Dec. 31,1929 2,079,744 Maguire MayIII, 193.7 2,111,582 .Crewe Maia 22,19382,115,591 Sherbondy Apr..26,,1-938 2,236,224 Ras'chkind Mar. 25, 1941

